We don't set the rate for a supply job – schools decide how much to offer. Set the rate you want to offer and staff who find that rate (and your other job requirements) agreeable can choose to respond.
The reason we don't fix a rate is that there are big disparities in terms of location, and the experience and skills required by the role – and we don't think that one fixed rate of pay reflects this.
Schools are best placed to determine the rate to offer because you know best what you're looking for and you know your school's policies on pay.
That said, paying teachers and support staff a fair wage is central to the ethos of Teacher Booker. By rewarding teachers fairly, we hope to encourage retention and stability in the profession. Support the cause by posting jobs with fair compensation. Of course, your position is likely to be filled more quickly if you offer an attractive rate of pay.